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Technical Data Sheet
PartsTable / COMPONENT / 6271-6D5
6271-6D5 ✓ Verified by PartsTable
— · NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The NUT,PLAIN,ROUND is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-633-6356, indicating validated use in U.S.

government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
6271-6D5
NSN: 5310-01-633-6356
FSC: 5310
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
Part Number6271-6D5
NSN5310-01-633-6356
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 6271-6D5 · OEM ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
170-213Interchangeable
interchangeable cross-reference
interchangeable
62-716Interchangeable
interchangeable cross-reference
interchangeable
P0S0903332Interchangeable
interchangeable cross-reference
interchangeable
562892-17Interchangeable
interchangeable cross-reference
interchangeable
3591-3CN0285Interchangeable
interchangeable cross-reference
interchangeable
MB-74 FIND NO.131Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 6271-6D5?
6271-6D5 is a NUT,PLAIN,ROUND.
What parts can replace 6271-6D5?
There are 7 known substitutes for 6271-6D5: 170-213, 62-716, P0S0903332 and 4 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 6271-6D5?
6271-6D5 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-633-6356. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026